Time lock



Dec. 20, 1938.

W. E. GOEHRING TIME LOCK 5 Sheets-'Sheet 1 Filed June 13, 1936 INVENTOR ATTORNEY Dec. 20, 1938. w. E. @cnil-mmc;

TIME LOCK Filed June 13, -1956 5 Sheets-Sheetl 2 l [NI/ENTOR v Way@ BY A mfom/EYl De. 20, 1938. w. E. GCEHRING 2,140,698

- TIME LOCK Filed June 15, 193.6 5 sheets-sheet 3 /N VENTO/e ATTORNEY v Dec. 20, 1938. w. E. GOEHRIING l TIME LOCK Filed June 15, .was 5 sheetssheet 4 'l INVENTOR A TT ORNE Y w. E. GOEH'RING TIME LOCK Dec. 20, 1938.

Filed June 13, 1956 NVENTOR 5 Sheets-Sheet 5 A TTORNEY Patented Dec. 20, 1938 UNITED STATES PATENT OFFICE TIME LOCK Application June 13, 1936, Serial No. 85,034

19 Claims.

This invention relates to time controlled 'mechanism of the type adapted for controlling locks to prevent access to various structures and money repositories such as are used in banks and commercial institutions.

Of late years, there has been considerable activity in the time locking art directed to devising means for preventing daytime hold-ups, by rendering currency inaccessible except after the expiration of a predetermined period of time. As a matter of fact, on January 9, 1930, I filed an application in the United States Patent Oice, now matured into Patent No. 2,048,376, covering a system for protecting bank funds by rendering inaccessible and beyond human control, thefunds of the bank, when the bank is threatened with a hold-up.

So many conditions arise in attempting to` protect funds kept in banks and commercial institutions, that it is necessary for a manufacturer at the present time, to make a great multiplicity or devices in order to. meet each of these conditions. Even with such a multiplicity of devices, it is relatively impossible to meet all conditions without continuously applying new mechanisms to ex1sting devices, and without continuously changing constructions. As a result, time controlled bank protecting systems and systems for protecting funds in commercial houses are Very expensive. The initial expense of systems of this sort has put them beyond the reach of many prospective users, and has of course prevented the rapid sale of such devices.

In order to meet the demand for a low cost time.

controlled device easily applicable in a large number of cases and conditions, I have devised a construction which is the subject matter of this application, and which I have called a universally applicable time lock because of the many uses to which it may be put. The basic feature `of my invention is this universality of my time lock whereby it may, with only very slight variations and additions, be applied to protect many types of lock structures, and may be used in many ways in existing types of time locking systems.

It may be well, before proceeding with a detailed description of my invention, to present generally a brief description of some of its applications, so as to illustrate the multiple uses of my invention and thus lay the basis for calling it a universally applicable time lock. The time lock embodies basically an operating shaft and time controlled mechanism for controlling the rotation of the shaft, it being of course understood that while a shaft is actually utilized, another form of moving mechanism may easily be devised.

As a prerequisite to the proper operation of the shaft, a time movement must run through a predetermined time period, and this predetermined time period begins to run only after a definite operation. The construction of the shaft is such that it may protrude through the casing to be utilized for operating an ordinary latch bolt lock present on a grill gate, or dead bolt lock such as used on the door of a'bank, or such as used behind the door of a vault. Similarly, the shaft may be'utilized to control the making of an electric circuit, so that the time lock may actually take the place of a control cabinet, such as shown in my said application, or may be utilized for resetting the'control switch in the invention described by Bennett and Archer, in their patent application Serial No. 679,523, filed July 8,- 1933, in the United States Patent Oce.

Similarly, the control shaft may be used for operating a burglar alarm, for controlling the release of a key for operating other locks whereby to maintain time control over those other locks, and for various other purposes which will readily occur to those skilled in the art. The control shaft may also be utilized 'for controlling a lock for the time lock casing itself, so as to prevent access to the time lock casing except under control of the time lock.

More specifically, the invention contemplates the rotation of the shaft not only to operate a particular mechanism as previously described, but also contemplates the rotation of the shaft to start the operation of the time movement of the time lock for the predetermined period for which it is set. Even more specifically, my invention contemplates the maintaining of the shaft against rotation in one direction by detent mechanism controlled by the time movement, with the provision of means operable by rotation of the shaft in an opposite direction for starting the running of the time movement so as to release the shaft for rotation in the first direction to operate the mechanism previously described.

Other features of importance which form part of my invention will of course be described in further detail hereinafter. One of these features is of particular importance in that it prevents an under-winding of the time mechanism. Thus, it is necessary as a result of the presence of this fea-l ture in my invention, that the time movement be wound to at least a predetermined position to require'at least a predetermined` running period. One skilled in the art will readily appreciate the necessity for this feature. In addition, the time movement and the release mechanism for the shaft are so constructed that an automatic relooking of the shaft takes place if the shaft is not operated within a few minutes after the running of the time period for which the movement is set.

As a safety feature, I employ two time movements operating in parallel, so that should one movement stop, the remaining movement will carry on the necessary Work. Furthermore, I so arrange the movements that the slowing down ofv one, or the entire stopping of one, will have not the slightest effect on the running of the remaining movement.

I shall now refer to a detailed description of my invention in commotion with the drawings, in which Fig. 1 is a front View of the time lock casing of my invention, while Fig. 2 is a partial section showing the application of my invention to the grill gate of a bank and with the rotatable shaft used for retracting the latch bolt maintaining the grill gate locked. Fig. 3 is a side View of the invention shown in Fig. 2. Fig. 4 is a view of a locking bar forming part o-f my invention. Fig. 5 is a perspective View of a modification of my invention. Fig. 6 shows part of the mechanism contained in the inside of the casing of my invention. Fig. 7 is a partial section through the parts of Fig. 6 showing the rotatable shaft for operating a latch bolt in a modification such as shown in Fig. 2. Fig. 8 is a front view of a cylinder lock used as part of my invention, While Fig. 9 is a detail view of the cylinder lock showing its construction. Figs. 10, 11 and 12 show different views of the key winding and the detent controlling mechanism of the time lock. Figs. 10a, 11a and 12a show the different positions of the plug of the cylinder lock when the parts are respectively in the positions of Figs. 10, 11 and 12. Figs. 13 and 14 are views of switch operating mechanism operable by my time controlled shaft. Figs. 15, 16 and 17 are side and end views of a portion of the modification of Fig. 5, Figs. and 17 being partial sections, while Fig. 16 is an end view and partial section.

Referring now more particularly tothe drawings, and especially to Figs. 1-3, my invention includes a housing or casing I0 having a dial and instruction plate I I through which protrudes the face of a cylinder lock I2 and its key plug I3. The front cover plate I4 of the lock is held in position by a stud I5 traversing the cover plate I4 and screw threaded at I6 into the base plate I'I of the casing. The base plate II is, in the modiflcation of Fig. 2, secured to the front face I8 of a grill gate I9. The grill gate carries a latch 20 of the usual type equipped with a usual type of latch bolt 2l. Screws 22 secure the casing I0 to the face plate I8 and may be manipulated only when the cover plate I# is removed by releasing the screw I5 in a manner to be described hereinafter.

Referring now to Fig. 7, the outside face plate I8 of the grill gate is shown bored out at 23 for the passage of a connecting bar 24 housed in a sleeve 25 mounted between the outside face plate I8 of the grill gate and the inside face plate I8a, so as to prevent unauthorized rotation of the connecting bar 24. The end 24a of the connecting bar extends through a bore 26 in the face plate I8a of the grill gate and operates a thimble 21 carrying a cam 28, which cam in turn retracts the Zatch bolt 2| in a conventional mannerv well understood by those skilled in the art. 'I'he bottom plate of thelock 20 is designated b-y reference numeral 29 and may be secured to the inside face plate IBa in any conventional manner.

The connecting bar 24 is secured by a locking member 30 to the inner extension shaft 3| of the key plug I3, this manner of securing the connecting bar being disclosed in the Brauning Patent No. 1,874,877. It is thus seen that rotation of the key plug I3 by a key 32, as shown in Fig. 9, in a manner well understood by those skilled in the art, will rotate the connecting bar 24 and retract the latch bolt 2| of Fig. 2. Means are provided, however, as Will be described later on, for particularly controlling the rotation of the key plug I3 and the extension shaft 3i by time mechanism.

In so far as I have already described my invention, it Will be understood by those skilled in the art that I provide a casing readily applicable to a structure to be locked, for operating the lock of the structure by the rotation of a shaft, the shaft being time controlled. This is but one of the ways in which my invention may be used, it being usable in several other ways and for many additional purposes, all of which cannot be set forth in this application, but which will readily occur to those skilled in the art of bank protec tion.

I shall now, before describing the method of time controlling my shaft, describe several other ways in which my invention and the shaft may be utilized. Mounted in the keyway of the key plug I3, there is a bar 36 adapted to be contacted at its outer end by the bitted portion 32a of the key and spring pressed by a spring 31 outwardly relatively to the locking member 30 against which the spring 31 presses. This bar 36 has an insulation portion 38 which is adap-ted to be moved integrally with the bar 36 by the full insertion of a key 32 into the keyway 35 so as tobring the insulation portion 38 into the plane of the contact members 39 secured at 46 to a stud 4I of the back plate I'I of the time lock casing.

It will be readily seen-that when the insulation member 38 is in the plane of the contact members 39 as in Fig. 14, it may be operated to the position of Fig. 13 to close an electric circuit between contact points 39a of the contact members 39. The circuit controlled by the contact members 39 may be of the same type as the lock system circuit disclosed in the application of Bennett and Archer indicated supra and there shown as manually operable after access is obtained to a compartment maintained time locked by a delayed timer. As a matter of fact, the closing of the circuit through contact points 39a may be used to reestablish a lock circuit such as set forth in my own application supra. While, of course, I show the direct closing of a circuit by the insulation piece 38, it should be appreciated that the rotation of the key plug and its extension shaft 3| may close a switch of the knife blade type or any other form of switch in which the contacts are permanently made, thus accomplishing manually what is accomplished by a time lock in my application supra.

In Figs. 13 and 14 I show two sets of contacts 39. The set to the left in Figs. 13 and 14 may be used for controlling a burglar alarm or signal, whereby if the lock is key operated after certain hours, an alarm will be sent in. Many other uses of the contacts will naturally occur to those skilled in the art.

As a further example of the universal applicability of the invention so far described, and especially'of the rotating shaft extension 3l of the key plug I3, I utilize this shaft to control access to the inside of the casing I0 by preventing release rotation of the screw threaded stud I5. Broadly, this type of control is covered inthe Miller Patent No. 1,962,933. It will be noted from Figs. 6 and 7, that the screw threaded stud I5 has a square portion I5a resting in a rectangular slot 40 of a slide bar 4I mounted for sliding movement on screw studs 42 carried by pillars 43, preferably cast integrally with the cover plate I4. T'he bar 4I is maintained by a spring 44 in position with the rectangular slot 40 opposite the square portion I5a of the screw I5. The slot 40 leads to an enlarged circular opening 45 which is movable opposite the square portion |50, against the resistance of the spring 44 by a cam 46 floating on the extension shaft 3| of the key plug I3-.and cooperating with the cam surface 46a of the bar 4I. This cam is operated by rotation of the key plug through a further caml fixed to the shaft 3I and to be described later. Therefore, when the plug I3 is released for rotation by the key 32 under the control of the `time lock mechanism, it is possible to move the bar 4| to a position Wherein the enlarged opening 45 will be opposite the square portion I5a of the screw threaded stud I5 to allow rotation of the screw to free the cover plate I4, as will be readily understood by those skilled in the art.

As a further illustration of the universality of application of my locking mechanism, I shall now refer more especially to Figs. 5, 15, 16 and 17, wherein I show a further modification of my invention. Within the casing I0 there is mounted a compartment 50 having an open slotted portion 5I, The compartment 50 is adapted for rotation relatively to the casing I0 and may be so rotated by a knob 52 secured to the face 53 of the compartment through a stud 54. The upper end of the casing Ill is slotted as at 55 and the under face of the casing I0 is slotted as at 55, and below the slotted portion 56 there is provided a cup member 51. The periphery of the compartment 53 is ratcheted in three places at 58, 59 and at 63. Cooperating with these three ratcheted portions is a spring pressed pawl BI. Aligned with the slot 55 of the casing I0 is a sheet metal guide portion 52 secured by arms 53 to the side of the casing. A similar guide 64 is secured in alignment with the bottom slot 5S. The compartment 53 is bored out at B5 for cooperation with a pin 65 which is preferably formed by the manufacturer on the slide bar 4I of every one of the universally applicable time locks.

Spring 44 maintains slide bar 4I in a locking position, with its pin extension 66 in the bore B5 of the compartment 50 so as to lock the compartment against rotation. If the slide bar 4I is pressed in a locking direction but an unbored portion of the compartment 50 is opposite pin 66, then the pin will merely slide relatively to the compartment 50 until the bore 65 is moved opposite thereto, when it will spring into locking relation to the compartment 50.

The operation of the parts just described is as follows: A key A, or any other device which is to be time locked, may, in the position of the parts in Fig. l5, be dropped into the compartment 5i) through the slot 55 and the guide member 52. In the position of the parts in Fig. 15, it is impossible to rotate the compartment 50 in a counterclockwise direction, although it is possible to rotate it in a clockwise direction. When it is so rotated, the slotted portion 5I is withdrawn from opposite the guide member B2 and the slot 55, so that it is impossible to reach into the compartment 50 to remove the key therefrom. At the same time, the compartment 5U is locked in this rotated position, because the parts now being in the position of Fig. 16, the pin 66 has entered the bore 55.

Not until the slide bar 4I is retracted by key operation of the plug I3 under time control to be explained hereinafter, is further rotation of the compartment 5o from the position of Fig. 16 to the position of Fig. 17 in a clockwise position possible. This rotation, upon retraction of bar 4I, brings the open slotted portion 5I of the compartment 50 opposite the guide member 64 and permits the key, or other device, A, to drop into the cup 51. If the key A is intended to operate a locking structure, it is readily seen, that in effect, a time locking control of that locking structure is secured through the maintenance of the key A under time control through the control of the extension shaft 3I of the key plug I3.

Having indicated the general construction of my time lock, and just how it is universally applicable for time locking various instrumentalities, I shall now describe a preferred method of placing the operating shaft 3l under time control. While, of course, my particular method of placing the shaft 3l under time control is novel and extremely ingenious, Vand While I shall ask for patent claims thereon, it should be understood that other forms of time locking the shaft may be employed so as to obtain the universal feature on which I have placed so much stress. I shall now describe the preferred method I have devised for time controlling the shaft 3|.

I utilize a pair of time movements B, each of which has a main-spring barrel 1I) equipped with a driving pin 1I adapted for a one-way driving connection with a pin 12 secured to the under side of a gear 13. The gears 13 are maintained in geared connection with a central gear 14 mounted for free rotation on the extension shaft 3|. Because of the one-way driving connection between the barrels 1D of the time movements and the gear 13, it will be quite obvious that the faster moving gear 13 will drive the central gear 14, and that should one of the movements stop, the particular movement which is kept in motion will itself operate the central gear 14. This provision is a very necessary safety feature which I deem of considerable importance.

Secured for integral movement with the shaft 3I, there is a winding and operating cam 15 adapted, when the shaft 3l rotates in a clockwise direction looking at Fig. 6, to cooperate with a pin 16 secured to the gear 14 for moving the gears 13 in a direction reverse to their running down direction, so as to wind up the time movements by a reverse cooperation between thepins 1I and 12. This will, of course, be quite clearly understood by those skilled in the art.

While this movement of the winding and operating cam 15 is always possible by key rotation of the plug I3 by key 32, it will be noted that a counterclockwise rotation of this cam will be prevented by a detent member 11 pivoted on winding arbor shaft 18 of the right hand movement B, and spring pressed into blocking relation tol the cam -15 by a spring 1Q. It is the counterclockwise rotation of the cam 15 which actuates cam 46 through pin 46D to retract the slide bar 4 I. Merely from viewing Fig. 6, it will be seen that in the position of the parts in that figure, counterclockwise rotation of the shaft 3l is impossible, and that therefore retraction of the slide bar 4I is impossible, and that therefore rotation of the shaft 3| in a direction to retract the latch bolt in Fig. 2, or to release the cornpartment 5U for rotation, or operate one of the switch mechanisms 39-39 will be impossible. I have provided several means whereby the movements B will retract the obstructing detent 'I'I from the position shown in Fig. 6 by moving it to the position illustrated in Figs. 11 and 12, wherein counterclockwise rotation Of the shaft 3| and the cam 'I5 will be possible.

To this end, I have pivotally secured on the gear 'I4 a pawl 80 maintained against a pin 8| by the pressure of a spring 82. Clockwise rotation of the parts from the position of Fig. 6 to the position of Fig. l0 will not only wind the movements B, but will cause the pawl to by-pass, through its spring pressed mounting, the cam surface 83 of the operating extension B4 of the obstructing detent I'I. When the movements B run down from the wound position of Fig. l0 to the position of Fig. 1l, the central gear Ill is naturally rotated and carries with it the pawl 80, which is held positively against clockwise movement relatively to the gear I4, and brings that pawl 80 against the under face of the extension 84 of the obstructing detent II so as to lift that detent against the pressure of the spring 19, as is well illustrated in Fig. 11. In the position of the parts in Fig. 11, it is now possible to rotate the key plug I3 and the extension shaft 3| in a counterclockwise direction, bringing the cam I5 from its dotted line position of Fig. 11 to its full line position in that same gure.

This operation of the key plug must take place while the movements rotate the pawl 8D from the position of Fig. 1l to the position of Fig. 12, since once the pawl 80 moves in a counterclockwise direction just past the peak of the extension portion 84 of the detent 'II (see Fig. 12), that detent 'I'I will be released once again to move into its position of Fig. 6, and it will once again be impossible to rotate in a counterclockwise direction the key plug I3 and its extension shaft 3|. Thus. not only do I provide means for releasing my operating shaft only after the expiration of a predetermined period of time, but I also make it necessary to operate my shaft within a few minutes after that predetermined period of time. Broadly, this feature is disclosed and claimed by Bennett in his application Serial No. 14.426, filed April 3, 1935.

The construction just described whereby the obstructing detent 'II is operated by the pawl 80, functions also so that it is impossible to underwind the movements B. Thus, should anyone wind the movements by rotation of the central gear 'I4 to an extent not sufficient to bring the pawl 8D on the under side of the portion 84 of the detent TI as in Fig. 10, then running down of the movements will not cause a lifting of the detent I'I in the manner illustrated in Fig. 11.

In Fig. 8, I show the initial position of my key plug I3 relatively to the cylinder I2, the dots 90 and 9| designating respectively the rotation to be given the key plug in winding the movement and in retracting the slide bar 4I and the latch bolt 2|. Similarly, in Figs. 10a, 11a, and 12a, I show the position of the key plug I3 and the position of the key 32 in the various positions of the parts in Figs. 10, 11 and l2, respectively.

I now claim:

1. A universally applicable time lock having a casing, a manually rotatable control shaft in said casing, one end of said shaft extending through said casing to the front of said casing for manual manipulation, the other end of said shaft extending through said casing to the back thereof, time controlled mechanism in said casing for preventing the rotation of said shaft in a predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the runningof said predetermined time period.

2. A universally applicable time lock having a casing, a rotating control shaft in said casing, one end of said shaft extending through said casing to the front of said casing for manual manipulation, the other end of said shaft extending through said casing to the back thereof, time controlled mechanism for preventing the rotation of said shaft in a predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period operable by rotation of the shaft in a direction reverse to said predetermined direction.

3. A universally applicable time lock having a casing, a rotating control shaft in said casing, manual means whereby said shaft may be rotated from a neutral point, lock means operated by the rotation of said shaft in a predetermined direction from said neutral point, a pawl for locking said shaft against rotation in said predetermined direction while allowing its free rotation in a reverse direction from' said neutral point, time mechanism for moving said pawl out of locking position when said mechanism has run through a predetermined time period, and means for starting the running of said time mechanism through said predetermined time period Operable by rotation of said shaft in said reverse direction.

4. A universally applicable time lock having a casing, a rotating control shaft in said casing, manual means whereby said shaft may be rotated in opposite directions from a neutral point, locking means released by the rotation of said shaft in a predetermined direction from said neutral point, a locking pawl for preventing the rotation of said shaft in said predetermined direction, time mechanism' for moving said pawl out of locking position when said time mechanism has run through a predetermined time period and for thereafter maintaining said pawl in release position for a further predetermined period, thereafter moving said pawl back to locking position, and means for starting the running of said predetermined time period operable by rotation of said shaft in a direction opposite said predetermined direction.

5. In combination, a time lock having a casing, a structure having a door on which said casing is applied, a rotating control shaft in said casing, a lock for the door of said structure mounted in a casing separate from said time lock, said lock being operable by the rotation of said shaft in a predetermined direction, time controlled mechanism in said time lock casing for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period.

6. In combination, a time lock having a casing, a structure having a door on which said casing is applied, a rotating control shaft in said casing, key operated means whereby said shaft may be rotated in opposite directions from a neutral point, a lock for the door of said structure mounted in a casing separate from said time lock, said lock being operable by the rotation of said shaft in a predetermined direction from said neutral point, time controlled mechanism in said time lock casingfor preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through `a predetermined time period, and means for `starting the running of said predetermined time period operable by rotation of said shaft in a direction opposite said predetermined direction.

'7. A universally applicable time lock having a casing, a compartment forming part of said casing and normally maintained inaccessible, a rotating control shaft in said casing, means for rendering said compartment accessible operable by the rotation of said shaft in a predetermined direction, time controlled mechanism for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period.

8. A universally applicable time lock having a casing, a compartment forming part of said casing and normally maintained inaccessible, a rotating control shaft in said casing, key operated means whereby said shaft may be rotated in opposite directions from a neutral point, means for rendering said compartment accessible operable by the rotation of said shaft in a predetermined direction from said neutral point, time controlled mechanism for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period operable by rotation of said shaft in a direction opposite said predetermined direction.

9. A universally applicable time lock having a casing, a rotating control shaft in said casing, a lock in said casing having a key plug held therein with its front face substantially aligned with the front face of the casing, said key plug and shaft being joined for integral rotation upon key rotation of said key plug, an opening in the back of the casing in alignment with the said shaft whereby said shaft may be extended beyond said casing, time controlled mechanism for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period operable by rotation of Said shaft in a direction reverse to said predetermined direction.

lO. A universally applicable time lock having a casing, a rotating control shaft in said casing, key operated means whereby said shaft may be rotated in opposite directions from a neutral point, an opening in the back of the casing in alignment with the said shaft whereby said shaft may be extended beyond said casing, means controlled by the rotation of said shaft in a predetermined direction, time controlled mechanism for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period operable by rotation of said shaft in a direction reverse to said predetermined direction.

1l. A lock for the closure of a structure comprising bolt mechanism on the inside surface of said closure, a casing and means securing said casing to the outer surface of said closure, a shaft in said casing, an opening in that surface of said casing lying against said outer closure surface, an opening in said closure surface aligned with said casing opening, means extending from said shaft and through said openings for operating said bolt mechanism by rotation of said shaft in a predetermined direction, time controlled mechanism for preventing the rotation of said shaft in said predetermined direction until the said time mechanism has run through a predetermined time period, and means for starting the running of said predetermined time period.

' 12. In a lock of the class described, a rotatable shaft, a time movement, control means actuated by the running of said movement through a predetermined period of time, means operated by rotation of said shaft through a predetermined number of degrees for setting the said movement to run for said predetermined period of time, and means of connection between said time movement and said control means maintained out of connection until said shaft isrotated at least said predetermined number of degrees, whereby to prevent a short setting of said movement.

13. In a time lock, a dogging detent, time mechanism, detent withdrawing means operable by said time mechanism for withdrawing said detent from dogging position, means for setting the time period through which said movement must run to withdraw said detent from dogging position, and means whereby the setting of the time period to a predetermined minimum is a prerequisite to the withdrawal of said dogging detent.

14. In a time lock, a dogging detent, a time movement for withdrawing said detent from dogging position, a detent withdrawing member operated by the running of said time movement, means for positioning said member in different relations to said time movement whereby to vary the running period required to withdraw the detent from dogging position, said movement being adapted to move said member from a position into which it is placed to a detent withdrawing position, and means whereby the positioning of said member in a position requiring a running of said time movement through at least a predetermined time period is a prerequisite to the withdrawal of said detent.

15. In a time lock, a dogging detent, a time movement normally maintained rundown, winding means for said movement, means whereby said movement withdraws said detent when it runs down from at least a predetermined wound position, said means comprising an operating member moved by the running of said movement, and means for positioning said operating member in operating relation to said detent upon said movement being wound to said predetermined position.

16. In a time lock, a dogging detent, a time movement normally maintained run down, winding means for said movement, means whereby said movement withdraws said detent when it runs down from at least a predetermined wound condition, said means comprising an operating member moved by the winding means for said movement into operating relation with said detent upon said movement being wound to at least said predetermined wound condition, and means whereby said member is operated reversely by the running of said movement from said wound condition to withdraw said detent from dogging position.

17. In a lock of the class described, a housing,

a rotating compartment in said housing having an open end, a lock in said housing for locking said compartment in a predetermined rotated position with said open end unexposed, said compartment when rotated upon being unlocked being adapted to expose its open end whereupon the contents of the compartment are rendered accessible, and delayed time controlled mechanism in said housing for controlling the actuation of said lock.

18. In a lock of the class described, a housing, a compartment rotatable in said housing and having an open end, a slot in the upper portion of said housing aligned with said open end in one rotated position of the said compartment, a slot in the under portion of the housing aligned With said open end in another rotated position of the compartment, and locking mechanism for locking 'said compartment in an intermediate rotated pocluding means for thereafter holding said detent 10 out of obstructing position While said time movement runs down farther and then releasing said detent for movement back to obstructing position until said time movement is again rewound to said first Wound position and runs down there- 15 from.

WILLIAM E. GOEHRING. 

